ivollensak



(No Model.)

J. F. WQLENSAK ELECTRO PUSH.

No.v 466,644. Patented Jan. 5, 1892.

UNITED STATES PATENT OFFICE.

A JOHN I". VOLLENSAK, OF CHICAGO, ILLINOIS.

ELECTRIC PUSH.

SPECIFICATION forming part of Letters Patent No. 466,644, dated January5, 1892. Application filed October Z3, 1891. Serial No. 409,596. (Nomodel.)

To alwhomf t 11i/ay concern.:

Be it known thatJ I, JOHN F. WoLLENsAK,

' a citizen of the United States, residingat Chicago, Illinois, haveinvented certain new and useful Improvements in Electric Iushes,of whichthe following is a specification.,

This invention is intended to be an im` provelnent upon the one coveredby my patent, No. 459,605, issued September 15, 1891; and my inventionconsistsin the features and details of construction hereinafterdescribed and claimed. r

In the drawings, Figure 1 is a transverse section taken through myimproved button. Fig. 2 is a plan View of the insulated plate in whichthe binding-screws are arranged. Fig. 3 is a plan View of a diskarranged between the button and the contact-points, and Fig. t is a sideelevation of my improved push.

In making my improved electric push I make-a plate A of any properinsulating Inaterial or of metal insulated from thebindingscrews, andhereinafter in speaking in the specification or claim et the insulatedplate I mean to indicate either kind. Iprovide this plate withbinding-scre\vs B, arranged on the outside or back. 'lhe binding-screwspass through the plate and extend into the interior of the push, so thattheir ends may serve the purpose of contact-points in completing thecircuit. I make acaso (j, provided with a hole for loose push-button l).'lo hold the button in proporposition, I arrange a spring E within thecase and intel-pose between the end of the spring and the button arocking or tiltingr metal disk l, which is provided with a boss orrounded surface fncxt to the push-bnttom This enables the disk as it ispushed in by the button to effect connection with the contaet-points torock or tilt to the one side or the other, as may be necessary to comeinto contact with both ofthe points of the binding-screws. In case oneof the screws extends farther into the case than the other the disk asit is pushed in will come lirst'into contact with such point and thenrock or tilt so as to corne also into contact with the other. By thisarrangement I am sure to always secure contact with both points of thebinding screws, so as to always complete the circuit, which might failto be accomplished were a Hat or non-rocking disk used or the pushbuttonitself only depended upon to elfeelt contact with both of thebinding-screws.

What I regard as new, and desire to secure by Letters Patent., is-

In electric pushes, the combination of a plate of insulating material,binding-screws for holding both ends of the circuit-wires arranged onthe outside and both extending through into the interior tooperate ascontact-points, a loose button to be pushed when it is desired tocomplete the circuit, and a rocking disk arranged intermediate the button and the binding-screws, which completes the circuit as it is pressedin by the button through direct instrumentality of both binding-screws,substantially as described.

JOHN l". WOLLENSAK. Witnesses:

WILLIAM E. GILL,

SAMUEL E. IlInnEN.

